Electric pencil sharpener



July 23, 1940- o. DI PRI-:Mo

ELECTRIC PENCIL SHARPENER Filed Dec'. 2. 1939 2 Sheets-Sheet 1 #h s zz/alz Priamo IN V EN TOR.

A TTORNEYS.

July 23, 1940. o, D, PRL-:Mo

ELECTRIC PENCIL SHARPENER y 2 Sheets-Sheet 2 INVENTOR.

` A TT ORNEYS.

Patented July 23, 1,940

oni-TED STATES maan PATENT UFFICE 6 Claims.

This invention relates to electric pencil sharpeners, the primary object of the invention being to provide a pencil sharpener wherein a pencil l i to be sharpened may be positioned therein, and

the motor of the Sharpener started operating sharpening blades to form and taper the pencil point.

Another object ofthe invention is to provide a Sharpener having pivotal connection with its base, so that the body portion of the Sharpener in which the receptacle for receiving the sharpenings from the pencil, is contained, may be swung laterally, to dump the contents of the receptacle.

A further object of the invention is to provide a .Sharpener of this character wherein the motor or main section of the Sharpener may be removed and an erasing attachment positioned therein, providing an electric eraser.

With the foregoing and other objects in view, which will appear as` the description proceeds, the invention resides in the combination and arrangement of parts and in the details of ,construction hereinafter described and claimed, it

, being understood that changes in the precise embodiment of the invention herein described, may be made within the scope of what is claimed, without departing from the spirit of the invention.

Referring to the drawings:

Figure 1 is a vertical sectional View through a pencil Sharpener constructed in accordance with the invention.

Figure 2 is a sectional View taken on line 2 2 of Figure 1.

Figure 3 is a sectional View taken on line 3 3 of Figure 1.

Figure 4 is a longitudinal sectional view through the main portion of the pencil sharp'- ener illustrating the main` portion of the pencil Sharpener as removed from its base and used as an eraser.

Referring to the drawings in detail, the reference character 5 designates the base or supporting plate, which is disk-like in formation, the base being secured by means of screws 6, to the supporting surface l. Hingedly connected to the base 5, is a disk-like plate 8 which is formed with an opening through which the screw S extends securing the plates 5 and 8 together.

The body portion of the pencil Sharpener is indicated by the 'reference character I0 and comprises a bottom II secured to the plate 8 so that when the plate 8 is swung from the position shown by Figure l of the drawings, to

(Cl. 1Z0-96) the dotted line positions, the body portion ID will move therewith. The body portion I8 is formed with upwardly and outwardly inclined arms I2, the outer ends of the arms being connected by the ring I3 formed integral therewith. 5l The outer surface of the body portion is closed by means of the translucent member I4, so that the shavings or particles of the pencil removed during the sharpeningk operation, may be viewed therethrough, to the end that when the body 1I) portion becomes full of pencil shavings, this condition may be observed, and the body portion dumped.

Flanges I5 are formed on the upper surface of the body portion I 0, and are designed to col5 operate with the flanges I 8 formed on the disk Il, so that when the disk IY'I is moved to cause the flanges I6 thereof to move under the flanges I5, the disk I'I will be locked in position on the body portion I8. This disk Il is formed with 20 threads to accommodate internal threads formed on the dome-shaped housing I8 in which the motor I9 is mounted, the motor being provided with a hollow armature 2D that has its lower end operating in an'opening formed in the disk 25 I1, the upper end thereof being fitted in a bearing formed in the upper portion of the domeshaped housing I8.

The cutting blades which are indicated by the reference character 2l are positioned within 30 the upper end of the hollow armature 20, to rotate therewith. A spiral indicated at 2l is mounted within the armature 20 and acts to create a suction through the hollow armature 20, removing the carbon and `pencil shavings from 35 the pencil being sharpened. A cap indicated at 22 is tted over the threaded extension 23 formed on the housing I8, and contacts with the upper ends of the blades 2I holding the blades in position. 'I'he cap 22 is formed with a central open- 40 ing so that a pencil may be inserted between the blades 2|, to accomplish the purpose of the invention. A switch indicated at 24 extends through the wall of the dome-shaped housing I8 and engages the contact member 25 to com- 45 plete a circuit to the motor I9 to cause the armature 20 thereof to rotate.

As shown by Figure 4 of the drawings, the housing I8 has been removed from the body portion IU, and a tubular support indicated at 50 26 is positioned in one end of the armature 20 to rotate therewith. A tapered erasing element 21 is positioned in the tubular support 26 to rotate with the tubular support with the result that when the armature 2U is rotated, the eras- 55 ing element 2l may be held on the surface to be erased, to accomplish its purpose. A spiral indicated at 23 is also mounted within the armature 2U and acts to create a suction through the armature 2Q clearing the armature of erasings.

From the foregoing it will be seen that due to the construction shown and described, I have provided a pencil Sharpener which may be readily and easily converted into an electric eraser, Without the use of tools such as wrenches or the like. v

In View of the foregoing detail description, a further detail description as to the operation of the device is believed to be unnecessary.

What is claimed is:

l. In .a device of the class described, a base plate, a body portion comprising a plate hingedly yconnected to the base plate and providingV a container, a dome-shaped housing, interlocking flanges on the housing and body portion removably connecting 'the housing and body portion, a motor mounted withinthe housing, a hollow armature forming a part of the motor, and blades mounted within the armature and adapted to taper a pencil positioned within the armature, when the armature is rotated.

2. In a device of the class described, a base plate, a body portion comprising a plate, hingedly connected to the base pla, a housing removably connected with the body portion, said housing having an opening in its upper end, a motor supported within the housing, a hollow armature forming a part of the motor and having one end thereof extended through the opening in the housing, sharpening blades carried within the hollow armature and adapted to sharpen a pencil positioned within the opening of the housing to contact with the blades.

3. In a device of the class described, a base plate, a body portion comprising a plate hingedly connected to the base plate providingA a container, a housing supported on the body portion, a motor mounted within the housing, a hollow armature forming a part of the motor, said armature having one end thereof extending through the housing and adapted to deposit material in the body portion, blades mounted within one end of the hollow armature and adapted to sharpen a pencil held against said blades as the armature rotates, and a translucent covering for the body portion.

4. In a device of the class described, a base plate, a body portion mounted on the base plate, a removable housing on the body portion, a motor mounted within said housing, a tubular armature forming a part of the motor and extended through the housing, and a member carried by the armature and rotated therewith for treating an article heidi-against said member.

5. In .a device of the class described, a base plate, a body portion mounted on the base plate, a lremovable housing on the body portion, a motor mounted within said housing, a tubular armature forminga part of the motor and extending through the housing, a member carried by the armature and rotated therewith for treating an article held against said member, and suction creating means operating within the tubular armature, for drawing material through the tubular armature.

Y 6. In a device of the class described, a base plate, a body portion mounted on the base plate, a removable housing on the body portion, a motor mounted within said housing, a tubular armature forming a part of the motor and extending through the housing, and a spiral mounted g within the tubulararmature and adapted to create a suction through the tubular housing drawing material from the article under treatment.

OWEN D. PREMO. 

